Easiest way to get this is by selecting the last hole on the first tour, The Sorry we're Closed Tour. This is a putting challenge in a room with flags all around you. Aim every shot towards the center of the cup, but instead of just putting it straight in, bounce it off the 4th wall. Hold the left trigger and pull back on the left stick. This will bounce your shot off the screen and straight forward. If you can align all of your shots with the hole and make every shot, it should net you about 100k over the 2m mark!
For those curious, the hole is located in France. Bottom right flag. Second option. Titled, "Whole New Ball Game"